Saliva ejector mouthpiece



Jan. 1, 1935. L vl ROBINSON 1,986,751

SALIVA EJECTOR MOUTHPIECE Filed May l2, 1933 INVENTOR Leslie gnon MVM/2%' M, Tp/z/ ATTORNEYS Patented Jan. l, 1935' UNITED STATES PATENTFHCE 1,98%,751 i sALrvA` EJEo'ron MOUTHHEGE Leslie V. Robinson, NewYork, Y. Application May i2, 1933, serial Nw 670.774 3 Claims., (c1. y3a-33) This invention relates to saliva ejector mouth pieces, an object of the inventionbeing to provide a device of this characterwhich will be comfortable to the patient and which will insure a prope 5 suction of saliva from the mouth.

' My improved device includes a suction tubebf general goose-neck shapewith a shield mounted at the inlet end of the tube and` functioning as a support for the tube, and also holding back theV membranes of the mouth from clogging the inlet end of the tube and interfering with the proper" suction or'drainage of saliva.`

By reason of the fact that the shieldis readily removable the` tube and shield can bethoroughly cleanedand sterilized, and `the interior of `the tube can be thoroughly cleaned by the passage of.

a. cleaner therethrough. o

Furthermore, by reason of the shape of the "shield, which is elongated andis curved in both directions, it readily conforms totheshape of the mouth under the tongue, and regardless of the angular disposition of the tube will insure a free drainage and be comfortable to the patient.`

With these and other objects in View, the `invention consists in certain novel featuresof con- M struction and combinations and arrangements of parts', all 0f` which will be more fully hereinafter C `described and pointed out in the claims.

\ In the accompanying drawing?- Figure 3 is a fragmentary v1ew insection on '35 theline 3/3 of Figure 2; and

Figure 4 is a plan view of theshield detached. 1 represents a tube of general goose-neck shape, which is adapted at one end to be connected with l any suitable suction means, and at its other end 46 has a, shield 2 extending across the inlet end 3 of the tube 1. The shieldv 2, as shown `clearly in Figure 4 of the drawing, `is preferably of vgeneral elliptical `shape ln plan.` `It is curved both opposite sides with upwardly and inwardly curving extensions 4 which have curved extremities 5 adapted to enter an annular groove 6 in tube 1 adjacent its inlet end3. I ycall particular attention to the fact that this groove 6 is suiciently Wide and so shaped as to permit the shield a universal movement thereon, that is to say, the shield not only can turn freelyon the tube but it can rock thereon and assume any angular position relative to the tube. Thematerial of the shield has sufficient tension so that theextensions 5 may be forced over the i end of the tubeand will spring into the groove Figure lis a. view in side elevation illustrating my improved device;

Figure 2 is a sectional elevation takenon` the i llne2/2 ofFigure 1; f

removably and movably support `longitudinally `and transversely, and is formed at together.

portion 6, but a, sharp pull on the shield will re` move it from the tube so that the shield and tube may be thoroughly sterilized, and a cleaner can be passedthrough the tube to clean the interior thereof. i

In use the device is placed in the mouth supported with the shield 2 resting on the membranes of the mouth under the tongue, and the saliva is i sucked through the tube while the shield holds the membranesof themouth away from the inlet j end of the tube.

As the shield sustainsthe weight of the tube and there is a free universal connection between the shield and the tube, the latter can assume any angular position and the shield will remain in ilat contact with the membranes ofthe mouth fyso that there will be an extendedsurface of the the preferred embodiment of my invention, it is to` be'distinctlyunderstood that variousslight changes may be made with regard to the form and arrangement of parts without departing from my invention, and hence I do not limit myself `to the l precise details setforth but consider myself at liberty to make such changes and alterations as fairly `fall within the spirit and scope of the claims. f

Whatlclaimis:` I i 1. A salivaejector mouth pieceincluding a tube having an annular groove near its inlet end, a` shield, and members on the shield` adapted to spring into the grooved portion of the `tube and the shield` in coupled relation to the tube.

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2. A saliva ejector mouth piece having an annular groove near its inlet end,`a shield, and resilient extensions on the shield" adapted to spring over the end of the tube and Vengage in` the groove to couple the mouth piece and shield i 3. A saliva ejector mouth piece including a tube of general goose-neck formation, having a relatively Wide annular groove adjacent its inlet end, a shield of greater width than the length of `the diameter of the tube, and extensionson the shieldadapted to spring over the end of the tube and rest in the groove so that the shield has unversal movement onthe end of the tube.

` LESLIE V. ROBINSON. 

